Although trial and error is one way to solve this problem of dividing the larger space, some visualising and planning before tackling the problem will lead to a more considered solution. The first consideration is how many lines does it take to divide regions. Youngsters often think that it requires four lines to divide the rectangle in to four regions. This also leads to a discussion of the difference between dividing in half as opposed to two, dividing into quarters as opposed to four sections. The stipulation that one of each of the shapes has to be in each section provides a way to review the properties of the different polygons.